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Help identifing telescope

refractor
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40 replies to this topic

#1 kshayota

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Posted 19 October 2020 - 12:45 PM

Hello everyone,
I bought this telescope some 30 years ago and had forgotten all about it.

I need your help figuring out what kind of telescope I have. I need to know the make, model, hopefully the year (or range of years) it was built, and any helpful specs. All I know is that it's a 5 inch refactor.

Used the can of Coke for scale smile.gif It's a big telescope.
Any and all help would be very appreciated it.
Thank You,
Kal

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Edited by kshayota, 19 October 2020 - 04:48 PM.

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#2 Astrojensen

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Posted 19 October 2020 - 01:06 PM

I think this needs to go to the Classics forum...

 

What you have there is a 5" Goto (yes, the company name is Goto) refractor and they are EXTREMELY SUPER ULTRA RARE. Goto is very famous for making ultra high quality optics and have a superb reputation in Japan. They are not so well known in the west, except among hardcore collectors. I know little about the history of Goto and their telescopes, but the aforementioned collectors will no doubt soon chime in...

 

If you have the entire telescope, mount and all, I don't dare to come with an estimate of possible value, but we're EASILY talking +$5k here, maybe a lot more. 

 

 

Clear skies!

Thomas, Denmark


Edited by Astrojensen, 19 October 2020 - 01:08 PM.

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#3 Joshm1084

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Posted 19 October 2020 - 02:03 PM

Looks like it was made by this company, though it looks like they no longer make telescopes, only planetarium projectors. 

 

https://www.goto.co..../work/#section1

 

Perhaps try running the label through Google translate if you don't speak the language? That's how I found who to google search using the camera translate function on my phone though its far from perfect. 

 

Screenshot_20201019-1454392.png

 

 



#4 dusty99

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Posted 19 October 2020 - 02:10 PM

Can you post a picture of the label on the telescope tube and also the text from around the border of the objective lens?


Edited by dusty99, 19 October 2020 - 02:17 PM.


#5 Matty S

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Posted 19 October 2020 - 02:15 PM

Goto 90mm or maybe even 4" from the 1960's?

Nice scope!

The badge on the focuser would definitely help.


Edited by Matty S, 19 October 2020 - 02:16 PM.

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#6 wrnchhead

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Posted 19 October 2020 - 02:16 PM

I had slightly different results using Japanese,

“ Tokyo Setagaya Ban Goto Komu Research Institute GOT ORYO) Ainaga Patent NO175742 NO175743.NO.176112.NO179644.NO.179653 NO.182443.NO.183886 Practical New Music Registration NO.360661 NO.368973 NO369223.NO.372513.N0.373424 NO.378475 This product is used in one or more of the above rights.”

Interesting that Chinese returns the sensible optics result for the brand, but the patent stuff makes more sense in the Japanese translation.

#7 PawPaw

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Posted 19 October 2020 - 02:26 PM

Welcome to the Classic forum.........Definitely a GOTO Kogaku.  Take a picture of the lens with the dew shield removed.  Better yet put it together and take several pictures and post them here......I am sure we can help.   Judging by the sun projection diagonal I see in the box it is likely 1950's or 1960's.  Very nice!

 

Don


Edited by PawPaw, 19 October 2020 - 02:30 PM.


#8 junomike

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Posted 19 October 2020 - 05:34 PM

Translates to  GOTO Optical Research



#9 Marc-Andre

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Posted 19 October 2020 - 05:41 PM

I'm stuck on the statement that you bought this telescope some 30 years ago and forgot about it.


Edited by Marc-Andre, 19 October 2020 - 08:13 PM.

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#10 kshayota

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Posted 19 October 2020 - 06:01 PM

Hi Apollo,

Well, I didn't totally forgot about it. I bought it almost 30 years ago, then I moved a couple of times, then I got married and had a child. I knew I had the telescope, I just haven't even opened the box or assembled the or thought the scope in at least 20 years.

I'm cleaning my garage, trying to minimize the number of things I own.

Kal


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#11 Bowlerhat

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Posted 19 October 2020 - 08:33 PM

It is a goto kogaku, but i've never seen a 5" goto kogaku which is smooth. Usually the ones posted in here has sliding weight on side with much bigger guidescope. Can you post a photo of the objective from the front?



#12 dave brock

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Posted 20 October 2020 - 05:33 AM

Are you sure it's a 5"? Looks exactly like my 4". More photos please.
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#13 Garyth64

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Posted 20 October 2020 - 08:06 AM

5" is most likely the diameter of the dew shield.


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#14 Stew44

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Posted 20 October 2020 - 10:03 AM

This may actually be a 3".  It looks to have a 40mm lens at the bottom of the case picture.  They came standard with the 3".  That would make it a Model 203.  Mount for 203 and 204 were same.  Please show some pictures of lens ring and confirm 40mm in case.  It also looks to have the high end finder that came with 3 and 4".  Goto did not make a 5" refractor, but did make a 12.5cm reflector.


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#15 kshayota

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Posted 20 October 2020 - 10:16 AM

Hello Everyone,

So I'm not sure if my scope is a 5", but that is the one thing I remember being told by the person I bought it from. I will take a picture of the front lens when I get home from work today and post it tomorrow.

Meanwhile, here is a picture of a picture of me standing next to the assembled scope about 20 years ago. I'm 5'11".

Kal

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#16 Terra Nova

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Posted 20 October 2020 - 10:26 AM

It looks to be a bit bigger than the 3” Goto I had. Maybe the 4”?

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Edited by Terra Nova, 20 October 2020 - 10:28 AM.

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#17 Stew44

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Posted 20 October 2020 - 11:20 AM

It's a 4" model 204.  The 3" model 203 has the sliding mounting system similar to the model 105.  The 4" uses the plate and rings.


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#18 PawPaw

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Posted 20 October 2020 - 11:50 AM

I agree with Stew it looks a lot like this one.

 

Details at the Japanese telescope museum:

 

http://www.telescope...m/tls/tls-2058/

 

 

 

 

 

 

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#19 Stew44

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Posted 20 October 2020 - 12:10 PM

The tripod and mount are another available configuration for the 3"/4" at this time.  The tripod is like that of my model 204

 

https://www.cloudyni...kogaku-mod-204/

 

but the mount is like that of my model 203

 

https://www.cloudyni...kogaku-mod-203/

 

The model 204 at the Japanese Telescope Museum actually had a motor drive but parts are missing.  I presume that since the OP has a manual adj rod attached to ra gearing that there is no motor.

 

The mount looks a little bare without the RA and Dec setting circles attached, which are in the case.  Also I don't see the finder bracket but maybe on the finder (nope, shows on one of the pictures).  What are the two strips of black tape for?  Telrad?


Edited by Stew44, 20 October 2020 - 12:15 PM.


#20 dave brock

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Posted 20 October 2020 - 12:10 PM

The one in the link is missing the motor gearbox.

#21 Stew44

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Posted 20 October 2020 - 12:17 PM

Dave, the first link is for legs.  The second link is mount with motor gearbox.



#22 dave brock

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Posted 20 October 2020 - 12:54 PM

I mean the link to the one in the Japanese museum. I posted the same time as you.

Edited by dave brock, 20 October 2020 - 12:55 PM.


#23 Stew44

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Posted 20 October 2020 - 01:19 PM

waytogo.gif



#24 dave brock

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Posted 24 October 2020 - 03:49 PM

Any more photos?

#25 kshayota

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Posted 02 November 2020 - 12:10 PM

Hello Everyone,

Finally adding a picture of the front lens. Hope this can further help identify this scope.

Thank You,

Kal

 

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